Definitions by NeroInferno

IBL 

Shortening for "I Blame Lag".
Commonly used in online games, as an excuse.

Accuser: We've got a feeder in our team!
Target: IBL.

Guy 1: Dude, you suck at this game.
Guy 2 (Lagging Player): IBL

IBL by NeroInferno October 21, 2012